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Measuring Your Impact: Journal Rankings, Citation Analysis, and Other Metrics

Additional Information

SNIP Indicator

Leiden University’s Centre for Science and Technology Studies (CWTSprovides free access to bibliometric indicators on scientific journals. 

A key indicator offered by CWTS Journal Indicators is the SNIP indicator, which stands for source normalized impact per paper. This indicator measures the average citation impact of the publications of a journal. SNIP corrects for differences in citation practices between scientific fields, allowing for more accurate between-field comparisons of citation impact. CWTS Journal Indicators also provides stability intervals that indicate the reliability of the SNIP value of a journal.

SNIP "measures contextual citation impact by weighting citations based on the total number of citations in a subject field.  The impact of a single citation is given higher value in subject areas where citations are less likely, and vice versa.

  • Measures contextual citation impact by normalizing citation values
  • Takes a research field's citation frequency into account
  • Considers immediacy - how quickly a paper is likely to have an impact in a given field
  • Accounts for how well the field is covered by the underlying database
  • Counter any potential for editorial manipulation"

SNIP indicators are based on Elsevier's Scopus bibliographic database and are available for over 20,000 journals.